Control apparatus

A control device, comprising:

• a pressure supply connection;
• a tank or return connection;
• first and second load connections;
• at least one of control valves or regulating valves connected between said supply connection, said tank or return connection, and said first and second load connections;
• first and second control lines connected in fluid communication with and controlling said control valves or regulating valves, said first and second control lines being connectable to one another by a pressure reducing valve on a discharge side of said first and second control lines, said second control line having therein at least one of a safety device against overpressure, a pressure limiting valve, a manually operable shutoff unit, an electromagnetically operable directional control valve or an adjustable flow restrictor;
• and
• different types of safety devices in form of modular-type function blocks specifying a same predefinable flange, said flange providing access to pressure between the pressure reducing valve and two pressure control valves.

A control device, comprising:

• a pressure supply connection;
• a tank or return connection;
• first and second load connections;
• at least one of control valves or regulating valves connected between said supply connection, said tank or return connection, and said first and second load connections;
• first and second control lines connected in fluid communication with and controlling said control valves or regulating valves;
• and
• a tempering function only activatable when in a neutral cycle with no hydraulic load connected to the load connections;
• in the neutral cycle, a defined volume flow is passed through all of a plurality of sections of the control device, with the volume flow being fed via an orifice and an open closing element of a valve;
• whereby the tempering function is interrupted by signaling a load pressure via a load-sensing line to the closing element of the valve.